Sandra Zaniewska defeated Bianca Koch 6-3 1-6 6-0 in the Koeln 10K semi-final on clay.
Zaniewska S. came through in three sets.
Sandra Zaniewska beat Bianca Koch 6-3 1-6 6-0. Umpiry, "Sandra Zaniewska vs Bianca Koch — Koeln 10K Semi-final", https://umpiry.com/match/2011-06-13/koch-vs-zaniewska-koeln-10k-sf?utm_source=cite (as of 13 June 2011).